Event program

Tuesday, 5/27/2014 3:00 PM - 7:15 PM, Camelia 2, Grand hotel Adriatic, Opatija Papers  3:00 PM - 3:15 PM O. Kuljaca, K. Horvat, Z. Eškinja (Brodarski institut d.o.o., Zagreb, Croatia) Static Characteristic and Describing Function of Polynomial Compensated Nonlinearities  Paper deals with polynomial compensation nonlineatities. Most actuators are nonlinear sporting s nonlinearities such as deadzone, saturation and others. One way of dealing with such actuators is to try to compensate for nonlinearities by polynomial representation of inverse nonlinearity. Compensated actuators can improve behavior of the system, but then we have a new nonlinearity in the system, polynomial compensated nonlinearity. Paper will show how to obtain static characteristic and describing function of such nonlinearities. 3:15 PM - 3:30 PM I. Aleksi (Faculty of Electrical Engineering, Osijek, Croatia), D. Kraus (University of Applied Science, Hochschule Bremen, Bremen, Germany), Ž. Hocenski (Faculty of Electrical Engineering, Osijek, Croatia) Simulation Environment for Creating Artificial Range Data in Underwater Object Reconstruction  This paper proposes a simulation environment for creating simulated ranging data of high resolution sonar systems. It enables the assessment of underwater object reconstruction techniques and the verification of various methods for automated target detection. As an input, the proposed environment uses the AUV's trajectory, a model of the sonar system attached to the AUV and 3D CAD models of underwater objects. As an output one can get a point cloud of the whole underwater object or 2D images, i.e. range data, which are smaller parts of a large object's 3D model. Noise is modeled and used as additional input in order to generate outputs that are closer to the real-world. The simulated data is processed and evaluated, where well known sonar signal processing methods are used to process the simulated acoustic signals. Automated target detection is achieved by processing the simulated 2D range data with advanced image processing techniques. 3:30 PM - 3:45 PM M. Gregurić, E. Ivanjko, S. Mandžuka (Faculty of Transport and Traffic Sciences, Zagreb, Croatia) Cooperative Ramp Metering Simulation  The increase of vehicle numbers in recent decades resulted with road traffic congestion problems. Such congestions are characteristic for dense populated urban areas and occur daily in morning and afternoon rush hours. Urban areas have the problem that they lack in the needed space to build new road infrastructure so the traffic congestion problem is solved by applying new traffic control approaches from the domain of intelligent transportation systems (ITS). One of the applied methods from ITS is known as ramp metering and is used to increase the throughput of urban highways with many on- and off-ramps. Nowadays ramp metering is used in cooperation with additional control approaches like variable speed limit control (VSLC). Prior to implementation of such cooperative traffic control systems they have to be tested in simulations using real world traffic data. One of the used simulators is CTMsim which enables macroscopic simulation of highway traffic and local ramp metering approaches. In this paper the CTMsim simulator is augmented to enable simulation of cooperative ramp metering algorithms, stand-alone VSLC, and cooperation between ramp metering and VSLC. Augmented simulator is tested using some limited available traffic data with Zagreb bypass urban highway as case study. 3:45 PM - 4:00 PM M. Menix, N. Mišković, Z. Vukić (Sveučilište u Zagrebu Fakultet elektrotehnike i računarstva, Zagreb, Croatia) Interpretation of Divers' Symbolic Language by Using Hidden Markov Models  The aim of this study was to create a system based on hidden Markov model which successfully interpreted divers' hand signals using real time video feed. The methods that were used in the development of the system for image processing are described. The paper describes the theory of hidden Markov models and the development of four different models for the need of interpretation of hand signals used by divers. It also presents experimental results showing the effectiveness of using the system in recognition of the dynamic hand signals, as well as the need to improve the system. 4:00 PM - 4:15 PM N. Mišković, S. Bogdan, I. Petrović, Z. Vukić (Sveučilište u Zagrebu Fakultet elektrotehnike i računarstva, Zagreb, Croatia) Cooperative Control of Heterogeneous Robotic Systems  Establishing a cooperative heterogeneous robotic system comprising autonomous vehicles operating in air, on ground and on/under water is a challenging task that can significantly contribute solving complex problems related to environmental monitoring (e.g. prediction, prevention and recovery from natural disasters) and security (e.g. border control, fight against terrorism). This paper presents a short overview of a project that involves cooperative control of heterogeneous robotic systems at the University of Zagreb Faculty of Electrical Engineering and Computing. An overview of the vehicles to be used in the heterogeneous systems is given and the envisioned scenario of neutralization of suspicious underwater objects is presented. Tasks of each vehicle are described and emphasis is placed on the actions and communication routes that are required to ensure cooperative behavior. 4:15 PM - 4:30 PM T. Špoljarić, M. Fruk, G. Vujisić (Tehničko Veleučilište u Zagrebu, Zagreb, Croatia) Program Solutions for the Complex Cooling Process via LADDER Logic  This paper describes designing complex process control in a cooling system. Control solutions specifically designed for simple cooling system are already available and these simple control designs include temperature control limited to one cycle of operation. For more complex cooling processes with variable operation cycles it is necessary to introduce a superior process control design, which coordinates the operations of simple processes. Within each cycle temperature is controlled by temperature regulator, while cycle operation exchange of individual processes is managed by microprocessor device whose program was written in LADDER logic in this study. 4:30 PM - 4:45 PM V. Tasić, M. Pavlov-Kagadejev (Mining and Metallurgy Institute Bor, Bor, Serbia), D. Brodić, V. Despotović (University of Belgrade, Technical Faculty in Bor, Bor, Serbia), D. Milivojević (Mining and Metallurgy Institute Bor, Bor, Serbia) The Use of the Internet and Wireless Communications in the Monitoring and Control of Industrial Processes  The development of communication technologies has enabled their application in the field of monitoring and control of industrial processes. This is primarily related to remote monitoring and control. This paper describes the application of Internet and wireless communications in the monitoring and control of production processes in the metallurgical company RTB Bor, Serbia. A special attention is paid to presentation of the software solutions. Implemented distributed control systems have shown remarkable reliability in practical work, low cost of maintenance and investment in their expansion. The described solution is applicable for monitoring and control of slow variables of the process in which it is enough that response of the control system to be one minute or longer. 4:45 PM - 5:00 PM Break  5:15 PM - 5:30 PM G. Malčić, D. Maršić, J. Čučuk (Tehničko veleučilište u Zagrebu, Zagreb, Croatia) Konfiguriranje Profinet I/O mreže u radu sa energetskim pretvaračem  Rad u realnom vremenu je jedan od osnovnih uvjeta koji računalna mreža mora zadovoljiti da bi bila primjenjiva u industrijskom okruženju. Upravo taj uvjet uz određene adaptacije je moguće postići sa primjenom ethernet tehnologije, te se u tom dijelu vidi najveći napredak. U ovom radu prikazan je stručni istraživački rad na implementaciji industrijske računalne mreže Profinet I/O na primjeru povezivanja pretvarača napona i frekvencije sa dvije različite izvedbe nadređenih industrijskih računala tvrtke Siemens. Konfiguracija i upravljački program su izvedeni u programskim okruženjima STEP 7 te TIA Portal V12, kako bi se uočila razlika u implementaciji. Opisan je i prikazan na primjeru način upravljanja i konfiguracije komunikacije pretvarača ABB ACS880 sa nadređenim PLC uređajem u dva slučaja – PLC sa integriranim Ethernet portom te PLC uređaj sa zasebnim komunikacijskim modulom. 5:30 PM - 5:45 PM I. Vlašić (Tehničko veleučilište u Zagrebu , Zagreb, Croatia), D. Maršić, G. Malčić (Tehničko veleučilište u Zagrebu, Zagreb, Croatia) Primjena SoftPLC koncepta procesnog računala prilagođene izvedbe s IEC1131-3 normom  Pristup projektiranju i izgradnji upravljačkih sustava u industriji se kontinuirano mijenja i poboljšava. Primjena IEC 61131-3 norme za programiranje PLC uređaja omogućila je razvoj novih vrsta upravljačkih sustava. Istovremeno proizvođači PLC-a prestaju s podrškom svojih starih sustava te prisiljavaju proizvođače opreme da koncepte svojih strojeva prilagođavaju novim sustavima. U radu je prikazano primjena SoftPLC rješenja tvrtke KW Software nazvano ProConOS (eng. Progammable Controller Operating System) u tiskarskom postrojenju novije generacije. Osnovni koncept automatizacije tiskarskog postrojenja se nije mijenjao osim primjene prilagođenog (eng. custom) SoftPLC-a koji je naslijedio SIMATIC S5 sustav zadržavajući kompatibilnost u načinu primjene i održavanja. 5:45 PM - 6:00 PM L. Despalatović, T. Vojković, D. Vukičević (Sveučilište u Splitu, Split, Croatia) Community structure in networks: Girvan-Newman algorithm improvement  Real world networks often have community structure. It is characteristic that the groups of nodes are connected denser within themselves and rarely with each other. The Girvan-Newman method for the detection and analysis of community structure is based on the iterative elimination of edges with highest number of shortest paths that go through them. By eliminating edges the network breaks down into smaller networks, i.e. communities. This paper introduces improved Girvan-Newman method where multi-edge removal is allowed, and presents the results of the application of both methods to the existing real social network (Zachary karate club), the computer-generated network and the tumor genes and their mutations network. The improved algorithm in practice reduces the number of operations, but retains the same computational complexity, so it cannot be applied to networks with a very large number of nodes. The most important feature of our improvement is that the result is graph-theoretical invariant, while original algorithm depends on the vertex labeling. 6:00 PM - 6:15 PM D. Skvorc, M. Horvat, S. Srbljic (Faculty of Electrical Engineering and Computing, Zagreb, Croatia) Performance Evaluation of Websocket Protocol for Implementation of Full-Duplex Web Streams  Besides traditional synchronous HTTP request-response communication paradigm that was used on the Web for decades, modern Web services require more flexible communication system that enables asynchronous messaging between clients and servers, as well as server-initiated data delivery. Among several server push technologies emerged recently, Websocket protocol and corresponding Websocket API are accepted as a pivotal framework for implementation of full-duplex asynchronous messaging and server push communication. In this paper, we evaluate the performance of Websocket protocol with respect to a traditional communication framework based on plain TCP sockets. We compare the two against the latency, throughput, and network traffic. The results show that, except a small traffic overhead imposed due to message framing, Websocket protocol does not introduce a significant overhead to communication parties, compared to TCP sockets. However, since Websocket protocol is designed to be seamlessly integrated with HTTP servers and fits well into existing Web security infrastructure, it seems more suitable to be applied in Web settings. 6:15 PM - 6:30 PM L. Milić, L. Jelenković (Faculty of Electrical Engineering and Computing, Zagreb, Croatia) Improving Thread Scheduling by Thread Grouping in Heavily Loaded Many-Core Processor Systems  In this paper a novel approach to task scheduling in manyprocessor systems is explored. It is based on keeping threads of the same process as close as possible and preferably even on the same processor. It is presumed that doing so in a busy system may be more beneficial than expecting those threads to run simoultaneously. The idea is tested by making adaptations to the Linux's round-robin scheduler so that it conforms to the idea. 6:30 PM - 6:45 PM D. Miljković (Hrvatska elektroprivreda d.d., Zagreb, Croatia) Automatic Interpretation of Aircraft Piston Engine Monitor Log  Digital engine monitor during each flight collects large amounts of data containing numerous engine parameters. Engine monitor logs can be later downloaded to a personal computer and graphically presented with specialized accompanying software as sets of engine parameter curves in a time domain. Potential problems are spotted when parameters exceed specified predetermined operating limits and when conditions for a particular diagnostic pattern are fulfilled. Catalogued diagnostic patterns consisting of CHT/EGT bars are complex and are not easily detected from representation in form of curves on a display. Rule based pattern recognition of catalogued graphic engine fault patterns (both static and temporal) can provide fault detection and identification with recommended corrective action. 6:45 PM - 7:00 PM D. Miljković (Hrvatska elektroprivreda d.d., Zagreb, Croatia) Regime Dependent Aircraft Piston Engine Monitoring  Modern digital engine monitors with separate probes for each cylinder provide useful diagnostic information that precedes large class of engine problems. Limits for alarm alerts in such monitors are set to encompass all phases of engine operation. Method for monitoring of engine parameters that considers multiple engine regimes corresponding to a current flight phase (engine run-up, taxi, take-off, climb, cruise and descent) and individual cylinder differences is presented. Engine operation that is presented graphically on the engine monitor display as patterns consisting of CHT/EGT bars. They can be compared to previously stored patterns corresponding to a particular flight phase possibly indicating deviations from previous flights. Flight phases are determined from available engine parameters together with speed and altitude derived from GPS data. 7:00 PM - 7:15 PM V. Vujović, M. Maksimović (Elektrotehnički fakultet Istočno Sarajevo, Istočno Sarajevo, Bosnia and Herzegovina) Raspberry Pi as a Wireless Sensor Node: Performances and Constraints  The main building block of Wireless Sensor Network (WSN) is sensor node consisted of four basic elements: the sensor unit, processing unit, communication and power units. In this paper we propose the Raspberry Pi, cheap, flexible, fully customizable and programmable small computer board and abilities of its usage as WSN node and SensorWeb node. The Raspberry Pi brings the advantages of a PC to the domain of sensor network, what makes it the perfect platform for interfacing with wide variety of external peripherals. Comparative analysis of its key elements and performances with some of current existing wireless sensor nodes have shown that despite few disadvantages, the Raspberry Pi remains an inexpensive computer with its very successfully usage in sensor network domain and diverse range of research applications. Wednesday, 5/28/2014 3:00 PM - 7:15 PM, Camelia 2, Grand hotel Adriatic, Opatija Invited lecture  3:00 PM - 3:30 PM P. Paganini (A.I.S. – Automation Integrated Solutions S.p.A., Sovizzo (Vicenza), Italy) Learning From Success Cases in Steel Industry Electrical and Automation Applications  This paper presents an overview on the evolution of the application of electrical and automation technologies in the industrial processes, with more details in the hot rolling mills for metals. Different aspects are taken into consideration, like electrical motors, power electronics, process control and information management. Finally, a proposal of a target framework for the future possible applications matching the present needs of industries, like improvement of production procedures and energy saving. Rather than going into deep details, the aim is to bring to the surface a certain amount of topics in order to support future actions requested by industries managers as well by electrical and automation companies. 3:30 PM - 4:00 PM T. Šimunić Rosing (University of California, San Diego, USA) Improving System Energy Efficiency by Leveraging Context Awareness  Papers  4:00 PM - 4:15 PM P. Rantanen, P. Sillberg (Tampere University of Technology, Pori, Finland) Event Calendar for Open Data Sources  Several nations in Europe have released formerly closed data sources collected by government agencies and municipalities. The open data initiatives have enabled new and innovative services. The research presented in this paper is funded by the Centre for Economic Development, Transport and the Environment of Finland, and City of Pori. This paper presents an event calendar service which utilizes open data sources available in Satakunta region, Finland. The overall architecture of the service is briefly described, and the paper focuses on the open source components used to implement the user interface, front-end service and database. Despite the use of region specific data sources, the utilized solutions – such as hybrid relational and document databases and HTML5 technologies – can be exploited in the design of other services. 4:15 PM - 4:30 PM M. Brčić, N. Hlupić (University of Zagreb Faculty of Engineering and Computing, Zagreb, Croatia) Simulation Library for Resource Constrained Project Scheduling with Uncertain Activity Durations  Stochastic Resource Constrained Project Scheduling Problems (SRCPSP) are among the hardest combinatorial problems. Exact calculations of interesting measures, such as expected project duration and the probability of satisfying the deadline, using known probabilities are in #P even for relaxed instances of the problem where resource constraints are ignored. The most common approach is to use substantial simulation to evaluate candidate solutions. This paper describes the discrete-time simulation library aimed to support the creation of simulation-based algorithms for solving SRCPS problems with known probability distributions of activity durations. The library is designed, in the first instance, with shared memory parallelization of simulations using OpenMP. Runtime parallelized generation of random activity duration scenarios is supported and we deal with “inconveniences” that are otherwise elegantly avoided using a priori generated activity duration scenarios. However, in some approaches that is not feasible and runtime scenario generation has to be used. We propose modular organization of simulators that enables better reuse of basic intrinsic project scheduling functionality. 4:30 PM - 4:45 PM N. Šamec (Državna uprava za zaštitu i spašavanje, Zagreb, Croatia), A. Jakupović (Veleučilište u Rijeci, Rijeka, Croatia) Methods and Software for Estimation of Information System Dependability   Information system dependability reflects the user's degree of confidence in the system. Today's ICT allows connections between information systems in different applications and in different geographic locations. These information systems are called dependable because connections between them cause certain events in one information system to be reflected in the other. Therefore, it is important to have a method for the estimation of information system dependability that will be used in the information system development phase. This estimation will provide arguments for a possible modification of information systems before their final commissioning. The purpose of this paper is to provide an overview of the methods and software for the estimation of information system dependability. Five qualitative and two quantitative (probabilistic) methods for estimation of information system dependability are presented. A list of ten estimation software in has been made and five of them are presented in detail. 4:45 PM - 5:00 PM K. Mišura, M. Žagar (Fakultet elektrotehnike i računarstva; Sveučilište u Zagrebu, Zagreb, Croatia) Internet of Things Cloud Mediator Platform  Internet of things (IoT) will connect a huge amount of devices to the Internet. There will also be many applications that will use the generated data to provide a service to end-user. This presents a problem in situations when the application owner is not the device owner. Application owner needs to find and contact the owners of the devices that provide the data he needs. When done by a human, this process lasts a long time and costs a lot of money. In this paper, we propose a middleware architecture that connects the appropriate devices and applications. It is based on software agents representing devices and applications negotiating between each other on the terms by which the data can be used. 5:00 PM - 5:15 PM Inauguration of a Special Interest Group (SIG) METALS   Invited lecture  5:15 PM - 5:45 PM V. Pekovic (RT-RK Institute for Computer Based Systems, Novi Sad, Serbia), I. Kastelan (University of Novi Sad, Faculty of Technical Sciences, Novi Sad, Serbia), G. Velikic, N. Teslic (RT-RK Institute for Computer Based Systems, Novi Sad, Serbia) The Multimedia Devices Portable Automated Test System  Rapid development of new technologies adds to an architectural complexity of multimedia devices. The last generations of multimedia devices consolidate multiple detached devices into a single device. Complex devices require more testing and verification methods, and more time to find a fault. Very often inoperative device has to be transported to operator’s facilities for complete diagnostics. Very often devices reported as inoperative by the customers are fully functional and the ‘fault’ is due to incorrect use of the device. Transportation of inoperative devices to repair/service centers prolongs time from a problem reporting to problem correction, increases costs, and adds to the customer’s discontent. HomeScreen test system comprises various input interfaces which cover any STB audio/video output. Together with functional verification HomeScreen allows vide analysis and picture quality measurement. Device is ideal for verification of STB/DVD/Blu-ray player’s devices in customer’s homes or retailers offices and also for monitoring of head-end signal quality in broadcast systems. Papers  5:45 PM - 6:00 PM N. Frid, V. Sruk (Fakultet elektrotehnike i računarstva, Sveučilište u Zagrebu, Zagreb, Croatia) Critical Path Method Based Heuristics for Mapping Application Software onto Heterogeneous MPSoCs   In this paper the authors propose new heuristics for automation of software partitioning and mapping onto heterogeneous MPSoC platform. In contrast with traditional approach to solving this NP-complete problem – the ILP, our method uses a modified version of CPM relying on greedy approach. The application software is modelled using a parallel model of computation and represented as a Directed Acyclic Graph. The algorithm performs one-to-many mapping of application to platform, which is also represented as a directed graph. This algorithm’s objective is to minimize the overall execution time of the application. In the first phase, using a modified version of Dijkstra algorithm, the algorithm identifies a critical path and maps all tasks in the path to the same PE (, starting from the fastest one) thus minimizing communication costs. In the later stages the algorithm is focused on finding best fit for unmapped tasks. Obtained solution is accelerated proportionally to number of processing elements in the platform and is reached in time proportional to ElogV. 6:00 PM - 6:15 PM G. Jurković (Faultet prometnih znanosti, Zagreb, Croatia), V. Sruk (University of Zagreb, ZAGREB, Croatia) Remote Firmware Update for Constrained Embedded Systems  In this work, we present the architecture of firmware software update infrastructure, which uses a centralized server to distribute adequate firmware updates to a large number of embedded devices. These updates enable transparent proactive management of everyday bugs and other vulnerabilities inherent in software-based systems, as well as embedded system evolution. Presented firmware update mechanism utilizes a network connectivity nowadays already presented in a wide range of embedded systems. Our methodology defines update model suitable for memory constrained embedded systems based on software agents. Experiments have shown that implemented protocol and infrastructure architecture provides reliable mechanism for embedded system update despite sporadic network connectivity in unreliable low speed environment. 6:15 PM - 6:30 PM N. Soskic (RT-RK Institute for Computer Based Systems, Novi Sad, Serbia), N. Kuzmanovic (University of Novi Sad, Faculty of Technical Sciences, Novi Sad, Serbia), M. Vidakovic, G. Miljkovic (RT-RK Institute for Computer Based Systems, Novi Sad, Serbia) Second Screen User Experience: A New Digital Television Frontier  Availability and increased hardware performance of handheld devices with high resolution screens encourage users to exploit them as the second screen while watching television. Second screen is a term that refers to an additional screen of a handheld device such as a tablet or a smart phone, with an operating system capable of running desired installed applications. Desire to make additional DTV information available to the user which can be presented on the second screen tends to push the limit of digital television in that direction. This paper presents a framework to distribute and present both premium and free-to-air television content. The framework is based on server/client architecture and includes: TV remote control, streaming of television services, additional content (Electronic Program Guide, reminders...), data protection of streamed services to client devices. The system architecture consists of a media server and its clients. Media server is a Set-Top box with Android OS. Main duty of media server is to receive and process DTV content received from broadcasters and distribute the content to clients (second screen devices). Client application is developed on various OS/Platforms: Android and iOS. Multimedia content can be streamed using supported protocols: HTTP, RTP/RTSP, and adaptive streaming protocols (HLS and MPEG-DASH). Streamed content is protected using DTCP-IP. The main objective of the paper is to describe the utilization of before mentioned standards in a framework to use the DTV data and functions beyond the scope of the main TV screen. The client application also implements the remote controller GUI in order to use one device to control the TV. 6:30 PM - 6:45 PM M. Bjelica, N. Ignjatov, I. Papp, N. Teslic (RT-RK Institute for Computer Based Systems, Novi Sad, Serbia) Device Cloud Platform with Script-Based Agents for "Anywhere Access" Applications Development  Providing access to devices via Internet is a growing trend allowing consumers to monitor and control their home appliances, heating, air conditioning and multimedia devices remotely from their tablets or laptops. Increasing number of “anywhere access” applications emerged to provide the users with cutting edge monitoring and control possibilities, including scheduling, event linking or even in-depth behavior scenarios definition. In this paper a device cloud platform architecture and a pilot implementation is presented. The device cloud allows arbitrary web, mobile or PC applications to connect to devices over the internet, to monitor and control their behavior and upgrade their firmware. It is also allowed to compose scripts and define cross-device and cross-event scenarios, which are maintained and executed within the cloud, thus allowing unprecedented level of automation and intelligent control. Main contributions of the presented device cloud are the interoperability with devices based on open technologies (TR-069), dynamic adaptation to device types, dynamic API layer towards user applications, intelligent bandwidth preservation and modular and scalable in-cloud scripting engine. 6:45 PM - 7:00 PM L. Kasapinov, M. Jovanov, D. Trajanov (Ss. Cyril and Methodius University, Skopje, Macedonia) A New Approach for Maximum Utilization of the Mother Steel Plates for Rectangular Steel Plates Orders  The rectangular steel plate is one of the many types of metal products produced in the steel industry. Cuboid shape objects with different dimensions called slabs are used as raw material In the process of its production. Steel plates (or metal sheets) are obtained by cutting pieces of the mother steel plate, which is produced from a slab. A major problem in the steel industry is combining orders of different steel pieces, for maximum utilization of sheet material from the mother plate. Resolving this issue is important because minimal improvements in the manufacturing process can result in huge savings. This problem has been thoroughly studied for many years in constraint programming community and several different methods for its solution are proposed. One good solution, proposed a few years ago uses Large Neighbourhood Search method which provides search and replacement of the proposed orders within a slab. Other solution uses linear programming, by defining column generation approach complemented with ad-hoc methods to fulfil the unsatisfied orders. In our paper we present new solution based on the previously proposed ideas, its implementation, and the results of the use in real industry environment. 7:00 PM - 7:15 PM D. Ivošević, N. Frid (Fakultet elektrotehnike i računarstva, Zagreb, Croatia) Performance-Occupation Trade-off Examination in Custom Processor Design  Trade-off between execution time and resource occupation arise in all kinds of digital system designs. Here we present such relation for FPGA-based custom processor design. The customization of processor architecture is entirely focused on its datapath which is based on predefined design template. The evaluation of the design is applied on whole design flow starting from input control and data flow characteristics of the application and its mapping to datapath components, and ending with FPGA implementation data. Therefore, it consists of numerous parameters that describe dependencies of final implementation on input specification and applied datapath design constraints. 7:15 PM - 7:30 PM D. Lukša (Polytechnic of Zagreb, Croatia), S. Fajt, M. Krhen (Faculty of Electrical Engineering and Computing, Zagreb, Croatia) Sound Quality Assessment in VOIP Environment

Vlado Sruk (Croatia), Leonardo Jelenković (Croatia), Dejan Škvorc (Croatia), Jadranko F. Novak (Croatia), Nikola Mišković (Croatia)

Matjaž Colnarič (Slovenia), Željko Hocenski (Croatia), Niko Guid (Slovenia)

Petar Biljanović (Croatia)

Alberto Abello Gamazo (Spain), Slavko Amon (Slovenia), Vesna Anđelić (Croatia), Michael E. Auer (Austria), Mirta Baranović (Croatia), Ladjel Bellatreche (France), Eugen Brenner (Austria), Andrea Budin (Croatia), Željko Butković (Croatia), Željka Car (Croatia), Matjaž Colnarič (Slovenia), Alfredo Cuzzocrea (Italy), Marina Čičin-Šain (Croatia), Marko Delimar (Croatia), Todd Eavis (Canada), Maurizio Ferrari (Italy), Bekim Fetaji (Macedonia), Tihana Galinac Grbac (Croatia), Liljana Gavrilovska (Macedonia), Matteo Golfarelli (Italy), Stjepan Golubić (Croatia), Francesco Gregoretti (Italy), Stjepan Groš (Croatia), Niko Guid (Slovenia), Yike Guo (United Kingdom), Jaak Henno (Estonia), Ladislav Hluchy (Slovakia), Vlasta Hudek (Croatia), Željko Hutinski (Croatia), Mile Ivanda (Croatia), Hannu Jaakkola (Finland), Leonardo Jelenković (Croatia), Dragan Jevtić (Croatia), Robert Jones (Switzerland), Peter Kacsuk (Hungary), Aneta Karaivanova (Bulgaria), Dragan Knežević (Croatia), Mladen Mauher (Croatia), Igor Mekjavic (Slovenia), Branko Mikac (Croatia), Veljko Milutinović (Serbia), Alexandru-Ioan Mincu (Slovenia), Vladimir Mrvoš (Croatia), Jadranko F. Novak (Croatia), Jesus Pardillo (Spain), Nikola Pavešić (Slovenia), Vladimir Peršić (Croatia), Goran Radić (Croatia), Slobodan Ribarić (Croatia), Janez Rozman (Slovenia), Karolj Skala (Croatia), Ivanka Sluganović (Croatia), Vlado Sruk (Croatia), Uroš Stanič (Slovenia), Ninoslav Stojadinović (Serbia), Jadranka Šunde (Australia), Aleksandar Szabo (Croatia), Laszlo Szirmay-Kalos (Hungary), Davor Šarić (Croatia), Dina Šimunić (Croatia), Zoran Šimunić (Croatia), Dejan Škvorc (Croatia), Antonio Teixeira (Portugal), Edvard Tijan (Croatia), A Min Tjoa (Austria), Roman Trobec (Slovenia), Ivana Turčić Prstačić (Croatia), Sergio Uran (Croatia), Tibor Vámos (Hungary), Mladen Varga (Croatia), Marijana Vidas-Bubanja (Serbia), Boris Vrdoljak (Croatia), Robert Wrembel (Poland), Baldomir Zajc (Slovenia), Damjan Zazula (Slovenia)

Abstract submission deadline: Friday, January 24, 2014
Full paper submission deadline: Monday, February 24, 2014
Final paper review deadline: Monday, March 17, 2014

Vlado Sruk
Faculty of Electrical Engineering and Computing 
Unska 3 
HR-10000 Zagreb, Croatia
Phone: +385 1 612 99 45 
Fax: +385 1 612 96 53
E-mail: vlado.sruk@fer.hr

Opatija – the cradle of European and Croatian tourism, a favourite destination of the aristocracy, film and music stars, artists, writers and visitors from all over the world, who come here every year to enjoy the charm of this Adriatic town – this year celebrates its 170th anniversary as a tourist resort.

This is a tradition that provides certain obligations, but is also a guarantee of quality. The reputation of a top destination that stretches back seventeen decades is today reflected in the wide range of facilities and services on offer that all together make Opatija an attractive destination for all seasons.

Opatija owes its unique image to its ideal location on the spot where the wooded slopes of Mount Učka descend all the way down to the coast, providing perfect shade along the thirteen-kilometre-long Lungomare seafront promenade. Just as the Opatija area is a meeting point of the sea and the mountain, its visual impression is a blend of different styles, as this is a melting pot where magnificent Central European elegance, playful Mediterranean charm and the historically-rich medieval architecture of the small towns in the hinterland come together. 

In addition to the architecture that leaves a strong impression on every visitor, especially when the town is viewed from the sea, and its lush parks and gardens that have been Opatija's trademarks since its beginnings as a tourist resort, Opatija also has hotels and restaurants whose quality ranks alongside that of any other European destination. Opatija's gastronomic offer is based on a Mediterranean cuisine rich in fresh fish and seafood and locally grown seasonal ingredients, while the traditional recipes of this region reveal a wealth of flavours and can be sampled in the area's numerous taverns. 

Opatija entered the European stage in the mid-19th century as a health resort for the European nobility, and health tourism has remained one of the main segments of the town's tourism offer right up to the present day. However, top medical experts and a wide range of spa & wellness services are just one of the reasons for visiting this town located at the top of Kvarner Bay. Also known as "the town of festivals", Opatija boasts a number of events throughout the year. The theatrical performances and concerts that take place at the magnificent Open Air Theatre are particularly impressive.

For more details please look at www.opatija.hr/ and www.opatija-tourism.hr/.